WEATHER: Highline Schools Will Be Closed Thursday; Flooding Possible
The Highline School District announced late Wednesday afternoon (Jan. 18) that there will be no school Thursday, Jan. 19, “due to weather conditions,” according to its website.
It’s likely that local private schools will follow suit, so be sure to check with them to see if Thursday will be another snow day.
The National Weather Service says that there is a chance of a bit more snow tonight, but that it should turn to rain Thursday and Friday, with another storm moving in that will dump a lot more rain on us, causing concern for flooding in local rivers.
We suggest to our Readers that now would be a good time to clear around your local storm drains as the snow melts and the rains come.
Here’s the most recent weather advisory, issued at 3:57 p.m.:
HYDROLOGIC OUTLOOK NATIONAL WEATHER SERVICE SEATTLE WA 357 PM PST WED JAN 18 2012
…CORRECTED TO ADD SPECIFIC MENTION OF RIVERS…
…FLOOD POTENTIAL THIS WEEKEND FOR SOUTHWEST WASHINGTON…
A WET AND ACTIVE WEATHER PATTERN IS IN PLACE FOR WESTERN WASHINGTON FOR THE NEXT WEEK. AS WE WIND UP THIS SNOW STORM…WE WILL BE EVALUATING THE AMOUNT OF WATER EQUIVALENT THAT IS LYING ON THE GROUND WAITING TO MELT AND RUNOFF IN TO AREA RIVERS.
MEANWHILE…A PACIFIC STORM IS HEADING FOR WESTERN WASHINGTON FOR FRIDAY INTO SATURDAY THAT WILL BRING RAIN OF ONE HALF TO TWO AND ONE HALF INCHES BELOW 4000-5000 FEET ELEVATION. MAXIMUM TEMPERATURES WILL BE IN THE MID FORTIES AND TOGETHER WITH THE WIND AND RAIN…WILL MELT THE LOWLAND SNOW. THIS AMOUNT OF RUNOFF COULD DRIVE RIVERS IN LOW ELEVATION BASINS ABOVE FLOOD STAGE. THIS INCLUDES THE CHEHALIS AND SKOKOMISH RIVERS. ANY FLOODING THAT DOES OCCUR IS EXPECTED TO BE MINOR. IN ADDITION…THIS COULD PRODUCE URBAN AND SMALL STREAM
PONDING OR FLOODING FROM SNOW AND ICE CLOGGED DRAINS AND CULVERTS JUST ABOUT ANYWHERE IN THE LOWLANDS OF WESTERN WASHINGTON.
THIS WILL BE A TRICKY SITUATION TO FORECAST AND UNCERTAINTY THAT THERE WILL OR WILL NOT BE FLOODING IS QUITE HIGH. RAINFALL INTENSITIES AND THE AMOUNT AND RATE OF LOWLAND SNOW MELT WILL DETERMINE HOW HIGH THE RIVERS RISE. THERE IS A LOT OF UNCERTAINTY IN HOW MUCH SNOW WATER THERE IS AND HOW FAST THAT SNOW WILL MELT.
RIVER MODELS DO NOT ALWAYS HANDLE THESE SITUATIONS VERY WELL SO SPECIFIC RIVER FORECASTS MAY NOT FULLY INDICATE THE EXISTING FLOOD RISK.
BEYOND THIS WEEKEND…WE WILL CONTINUE TO GET STORMS THAT WILL CONTINUE TO BUILD RISES ON AREA RIVERS INTO NEXT WEEK FOR ADDITIONAL PERIODS WHEN THERE MAY BE THE RISK OF FLOODING.
STAY TUNE TO THE LATEST WEATHER AND RIVER FORECASTS AND BULLETINS.
Here’s the latest 7-day :
Tonight: A chance of snow before 10pm, then a chance of rain and snow. Snow level 200 feet. Cloudy, with a low around 30. North northeast wind between 5 and 14 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Thursday: A chance of rain and snow. Snow level 100 feet. Cloudy, with a high near 37. North northeast wind between 7 and 10 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Thursday Night: A chance of rain and snow. Snow level 200 feet. Cloudy, with a steady temperature around 34. North northeast wind between 7 and 10 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Friday: Rain. High near 44. South southeast wind between 5 and 7 mph. Chance of precipitation is 80%.
Friday Night: Rain. Low around 40. South southeast wind around 9 mph. Chance of precipitation is 100%.
Saturday: Rain. High near 46. Chance of precipitation is 90%.
Saturday Night: Rain. Low around 37. Chance of precipitation is 80%.
Sunday: Rain likely. Mostly cloudy, with a high near 43.
Sunday Night: Rain. Cloudy, with a low around 38.
Monday: Rain. Cloudy, with a high near 43.
Monday Night: Rain. Cloudy, with a low around 37.
Tuesday: Rain. Cloudy, with a high near 47.
Tuesday Night: Rain. Cloudy, with a low around 37.
Wednesday: Rain. Mostly cloudy, with a high near 47.